9 Interfaces
Page 86 Installation manual for PMCtendo DD5/PMCprimo Drive3
9.20.4 Functional description
If the restart lock -AS- is not needed, then the input AS-ENABLE must be connected directly
with +24VDC. The restart lock is then passed by and cannot not be used.
In case of use of the restart lock the input AS Enable must be connected to the exit of
a security control or a safety relay, which meets at least to the requirements of the
category 3 after EN 954-1 (see the connection diagram on page 85).
Possible states of the servo amplifier in connection with restart lock -AS-:
AS-ENABLE ENABLE Display Motor has torque Safety Kat. 3
0V 0V -S- no yes
0V +24V F27 no yes
+24V 0V normal status e.g. 06 no no
+24V +24V normal status e.g. E06 yes no
If the restart lock is engaged during operation by separating input AS ENABLE from 24VDC, the
motor runs down out of control and the servo amplifier displays the error F27. There is no
possibility of braking the drive controlled. If a controlled braking before the use of the restart
lock is necessary, the drive must be braked and the input AS-ENABLE has to be separated
from +24VDC time-delayed.
The restart lock -AS- does not provide an electrical separation from the power output. If
access to the motor power terminals is necessary, the servo amplifier must be
disconnected from mains supply considering the discharging time of the intermediate
circuit.
Since the restart lock is a single-channel system, erroneous engaging will not be recognized.
When wiring the input AS-ENABLE within one enclosure it must be paid attention to the fact
that the used cables and the enclosure meet the requirements of EN 60204-1.
If the wiring leads outside the demanded enclosure, the cables must be laid durably (firmly),
and protected from outside damage.
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